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13 Years
experience
Emergency
services
Your Trusted HVAC Partner in Wentzville, Missouri
Johnson Heating and Cooling was founded in 2013 by Tracy and Shaun Johnson, a husband-and-wife team with deep roots in the HVAC industry. Tracy grew up immersed in the trade through her parents' 30-year HVAC business, while Shaun brings over 25 years of experience as a licensed Journeyman. Our family-owned company specializes in installing high-quality heating, cooling, and air quality systems for both new construction and existing homes. We prioritize customer education to ensure homeowners make informed decisions about their comfort systems. Our team of NATE-certified technicians provides comprehensive repair, maintenance, and installation services for all equipment brands.

We maintain twice-yearly maintenance agreements to ensure optimal system performance and energy efficiency. Our commitment to trustworthy service extends to transparent communication and competitive pricing. With a focus on serving Wentzville and surrounding communities, we combine technical expertise with personalized care. Our employees have remained with us since our founding, reflecting our stable, family-oriented work environment. We partner with Wells Fargo to offer financing options for system upgrades, making comfort solutions accessible to all homeowners.
Services
HVAC Installation AC Repair Furnace Services Geothermal Systems Ductless Mini-Splits Water Heater Installation Air Quality Solutions Zoning Systems Emergency Repairs Maintenance Plans
Details
  • Year established: 2013
Highlights and features
  • Family-owned since 2013 with 25+ years of HVAC experience
  • NATE-certified technicians for industry-recognized expertise
  • Wells Fargo financing options available for system upgrades
  • 24/7 emergency service for urgent HVAC needs
  • Serving 15+ communities in St. Charles and Lincoln Counties
Associations and certifications
  • NATE-certified
What people say
Reliable service Professional technicians Prompt emergency response Knowledgeable staff Long-term value
Services
HVAC Installation
We install high-efficiency heating, cooling, and air quality systems for new construction and existing homes. Our specialists help homeowners choose between single-stage, two-stage, and variable-speed systems based on their specific needs. All installations use quality components designed for long-term reliability and energy efficiency.
AC Repair
Our NATE-certified technicians diagnose and repair all makes and models of air conditioning systems. We handle refrigerant leaks, compressor issues, and electrical problems while explaining repair options clearly. Emergency service is available for urgent cooling system failures during hot Missouri summers.
Furnace Services
We provide comprehensive furnace maintenance, repair, and replacement services. Our twice-yearly maintenance agreements help prevent breakdowns during winter months. Technicians service single-stage, two-stage, and variable-speed furnaces while explaining efficiency benefits to homeowners.
Geothermal Systems
We install and service ClimateMaster geothermal systems that use underground temperatures for efficient heating and cooling. These systems can reduce energy costs by up to 80% while providing consistent comfort. Our team handles loop system design and heat pump installation.
Ductless Mini-Splits
We sell and service ductless mini-split systems for room additions, garages, and homes without existing ductwork. These systems provide efficient cooling for specific zones while avoiding the need for extensive duct installation.
People
Tracy Johnson
Co-Owner
Co-founder with lifelong HVAC industry experience through her family's 30-year business. Manages customer relations and office operations while maintaining a warm, approachable presence for clients and staff.
Shaun Johnson
Co-Owner
Co-founder with 25+ years of hands-on HVAC experience. Holds Journeyman Licenses in multiple counties and oversees technical operations. Known for craftsmanship and building trust with both homeowners and construction professionals.
Questions
What HVAC services do you offer?
We provide complete heating, cooling, geothermal, and water heater installation, repair, and maintenance services for residential properties.
Do you offer emergency HVAC service?
Yes, we provide 24/7 emergency service for urgent heating and cooling system failures.
Can I finance new HVAC system installation?
We offer financing through Wells Fargo for qualified applicants to make system upgrades more affordable.
Which areas do you service?
We serve Wentzville and 14+ surrounding communities in St. Charles and Lincoln Counties, Missouri.
How do I schedule service?
Call 636-332-4141 or use our online scheduling system to book appointments for maintenance or repairs.
What maintenance plans are available?
Our Elite Safety & Efficiency Agreement includes twice-yearly system checkups and cleaning to maintain optimal performance.